Question

The wavelength of a wave in a vacuum is 5700 angstrom, the wavelength of the same wave in a glass of refractive index 3/2 is a) 1900 Å. 2) 5400Å. 3) 3800 Å. 4) 8500Å

Answer 1

Answer:

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Answer 2

Answer:

the wavelength of the same wave in a glass is 3800 Å

Explanation:

Given:

Wavelength of a wave in vacuum = 5700 angstrom

Refractive index in glass = 3/2

Wavelength of a wave in glass = W

We know that

Refractive index in glass = Wavelength of a wave in vacuum/Wavelength of a wave in glass

So,

Wavelength of a wave in that medium = W = 5700/(3/2) = 3800 Å